Experimental study of gas-liquid two-phase wavy stratified flow in horizontal pipe at high pressure
Experimental study of gas-liquid two-phase wavy stratified flow in horizontal pipe at high pressure
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DOI：
10.1016/j.ijheatmasstransfer.2019.118537
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发表时间：
2019-11
影响因子：
5.2
通讯作者：
Yubo Wang;Zhigang Liu;Yingjie Chang;X. Zhao;Liejin Guo
中科院分区：
文献类型：
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作者：
Yubo Wang;Zhigang Liu;Yingjie Chang;X. Zhao;Liejin Guo
对高压水平管道内气液两相流流态进行了实验研究，计算了波层流的波长、波高和传播速度等特性。分析了压降，计算了气壁、液壁和界面摩擦系数等摩擦系数，并推导出了新的相关式。研究了界面波对界面摩擦系数的影响，并引入界面波的特征，推导出新的相关式，并证明了良好的准确性。对于2MPa下的气水两相流，与大气相比，气体空塔速度较小，出现波层流向环空流的过渡，液体空塔速度较大，出现间歇流。对流态转变模型进行了测试，对于大气中的气液两相流，遮蔽系数取0.01较为合适。然而，在2MPa下它提升到0.06，并且达到了良好的状态转变模型性能。
The regimes of gas-liquid two-phase flow in horizontal pipe at high pressure were experimentally investigated, and characteristics of wave stratified flow, such as wave length, wave height and propagation speed were calculated. The pressure drop was analyzed and friction factors, such as gas-wall, liquid-wall and interfacial friction factors, were calculated and new correlations were deduced. Influence of interface wave on interfacial friction factor was studied, and characteristics of interface wave were included to deduce new correlation for it, and good accuracy was proved. For the gas-water two-phase flow at 2 MPa, transition from wave stratified to annular flow appears with smaller gas superficial velocity compared with that at atmosphere, and intermittent flow appears with greater liquid superficial velocity. Regime transition models are tested, for the gas-liquid two-phase flow at atmosphere the sheltering coefficient with value of 0.01 is appropriate. However, it is promoted to be 0.06 at 2 MPa, and good performance of regime transition model was reached.